Perspective distortions are often visible on the urban landscape and in the architectural photography:

A city view, Moscow

The St. Peter’s Cathedral, Vatican
Correction of distortion:

St. Petersburg
The program also allows adjusting the angle of the horizon line by setting it as the horizontal line:

On the lake Kedrozero, Karelia
A visual slope often takes place on amateur photographs of urban landscapes and on architectural photographs as well. You can correct it quickly and easily by setting a line above the identical architectural elements as the horizontal axle:

The Isakievskii Cathedral, St. Petersburg
The following photo was corrected in Perspecitve Pilot by pointing a segment using the “Four-point perspective correction” tool:

Schönbrunn Palace, Vienna
How to adjust perspective of a floor plan:

How to correct perspective distortion in document photos captured by a mobile phone camera:

How to edit perspective of an architectural block (provided by Bill Petty, author of book “Hieroglyphic Dictionary”):
